Bytelearn - cat image with glassesAI tutor

Welcome to Bytelearn!

Let’s check out your problem:

For the function 
f(x)=(3+x)/(4x-9), find 
f^(-1)(x).
Answer: 
f^(-1)(x)=

For the function f(x)=3+x4x9 f(x)=\frac{3+x}{4 x-9} , find f1(x) f^{-1}(x) .\newlineAnswer: f1(x)= f^{-1}(x)=

Full solution

Q. For the function f(x)=3+x4x9 f(x)=\frac{3+x}{4 x-9} , find f1(x) f^{-1}(x) .\newlineAnswer: f1(x)= f^{-1}(x)=
  1. Replace with yy: To find the inverse function, f1(x)f^{-1}(x), we need to switch the roles of xx and yy in the original function and then solve for yy. Let's start by replacing f(x)f(x) with yy for clarity.\newliney=3+x4x9y = \frac{3 + x}{4x - 9}
  2. Switch x and y: Now, switch x and y to find the inverse function.\newlinex=3+y4y9x = \frac{3 + y}{4y - 9}
  3. Multiply by (4y9)(4y - 9): Next, we need to solve for yy. To do this, we'll multiply both sides of the equation by (4y9)(4y - 9) to get rid of the fraction.\newlinex(4y9)=3+yx \cdot (4y - 9) = 3 + y
  4. Distribute xx: Distribute xx on the left side of the equation.4xy9x=3+y4xy - 9x = 3 + y
  5. Move y to left: Now, we want to get all the terms with y on one side and the constants on the other. Let's move y to the left side by subtracting y from both sides.\newline4xyy9x=34xy - y - 9x = 3
  6. Factor out yy: Factor out yy on the left side of the equation.y(4x1)=3+9xy(4x - 1) = 3 + 9x
  7. Divide by (4x1)(4x - 1): Now, divide both sides by (4x1)(4x - 1) to solve for yy.y=3+9x4x1y = \frac{3 + 9x}{4x - 1}
  8. Inverse function found: We have found the inverse function. Therefore, f1(x)f^{-1}(x) is:\newlinef1(x)=3+9x4x1f^{-1}(x) = \frac{3 + 9x}{4x - 1}

More problems from Simplify variable expressions using properties